Another work-around is a ref-converter.
PENTAX Refconverter A reviews - Pentax Camera Accessory Review Database This one has an adjustable ocular, and switchable 1x or 2x magnification, ideal for closeups. I bought one of these, used of course, before I got my LX and finder-base, etc. This one fits my K10d, fortunately. Be wary, there is an earlier model which may not fit the MX, ME, LX and digital models.
I finally found one for my 645n, cost a good deal more, though.
Pentax Refconverter 645 reviews - Pentax Camera Accessory Review Database
Using these on a tripod is a god-send for macro or closeup work with the tripod close to the ground. But I find that, at 5 feet 10 inches, I can minimize the center pole extension on my tripod, since I can look down into the finder. Since both ref-converters will rotate, horizontal or vertical compositions are readily handled. Of course, YMMV.